Stop-motion for combers and the like.



P. 1. DOCKRAY.

STOP MOTION FOR COMBERS AND THE LIKE APPLICATION FILED saw. 5. 1914..

Patented; Jan. 1, 1918.

2 SHEETS-SHEET'!.

amva m oa P. J. DOCKRAY.

STOP MOTION'FOR COMBERS AND THE LIKE.

APPLICATION FILED SEPT. 5, I914.

1,%52 ,095. Patented Jan.1,1918-.

.. 1 a 2 SHEETS-S HEET 2- PETER J. Doc aAY, or woonsocKEr, snonn ISLAND.

STOP-MOTION FOR COIVIBERS AND THE LIKE.

Specification of Letters Patent. I I Patented Jan. 1,1918.

Application filed September 5,1914. Serial No. 860 531.

To all whom 2'25 may concern:

Be it known that I, PETER J. DOCKRAY, a citizen of the United States, residing at WVoonsocket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Stop-Motions for Combers and the like, of which the following is a specification, ref-' erence being had therein to the accompanying drawing.

T his invention provides a stop-motion for use in association with combers and other fiber-treatlng machines, and 1t is an ob ect of the invention to provide efficient and re liably-acting means for stopping such a ma chine, the functioning of which is dependent upon occurrence of certain conditions in the material passing through the machine.

While it is not the intention to limit the application of the invention to any particu lar machine for treating material while in substantially continuous movement, the invention, for purposes of explanation, is described herein as associated'with a cottoncoinber. In such a machine the stop-motion should operate when there is a lap run out,

a lap upon a detaching-roll, a choked trumpet, a pulling apart of sliver on the table, a pulling apart of sliver between the draw-box calender-rolls and the coiler, and a roll lap in the draw-box, and the stop-motion'provided by this invention is arranged to stop the machine on occurrence of any of these conditions. 7

The present invention pertains more par ticularly to a power-shifting device whose action is instituted to stop the-machine, upon occurrence of one or more ofthese condi' tions in the material, by the closing'of an electric circuit effected by one or more cir-,

'cuit-closers responsive to conditions in the material, as, for example, such as are shown by copending 'applicationsSerial Numbers 127,295, 127,296, and 127,297, filed October 23, 1916, which are divisions of'this application.

hen read in connection with the description herein, the details of constructionand arrangement of parts contemplated by the invention will be apparent from the ac-,

companying drawings, forming part hereof,

wherein an embodiment of the invention as applied to a cotton-comber is disclosed.

WVhile the embodiment of the invention exemplified herein now is considered a preferable one, itis to be. understood "that it is Like reference-characters refer to corresponding parts in theviews of the drawings, of which Figure 1 is a side View of a lap run-out motion, 7

F 2 is a view thereof looking in direction'of the-arrow, Fig. 1; I e

tionand other parts, and it includes a diagrammatic exposition of the electric circuit and power-shifting mechanism;

Fig. 4 is a View in elevation of the beltshifting mechanism;

Fig. 5 is an enlarged viewin elevation of a portion of the belt-shifting mechanism;

Fig. 6 is a'sectional view on the line 14 l4,-Fig. 5;

Fig. 7 is a plan view of parts shown by.

Fig. 5;'

Figs. "8, 9, 10, and-1 1 are views illustrative of different positions of the pawl-controlling spring.

In order properly to explain the Operation of the power-shiftingmechanism to whichthe present invention pertains, a circuitcloser, such as hereinbefore ment1oned, ar-

tably mounted on the shaft 65 (one at'each end of'roll 64 androtating normally with the rolls under the influence of frictional contact imposed bywashers- 67 and collars 6S, whichkeep the wheels against the ends of the rolls; 69 the front rolls forthe lap carried on ashaft 70; and 71 a longitudinal frame member of the machine of which these members are parts.

F ixedly secured to the frame member 71 by bolts 72 and insulatedby non conductive material 73- there are "several brackets or arms 74, of whichone' is shown, extending rearwardly between adjacent ends of'the rolls 69 and under the shaft70. These arms or brackets support and havesec'urely held in their ends by set-screws 7 5 a longitudi-' nally-extending rod 76,- which the material.

F 1g. 3 is a plan view of the lap run-out mo 73 insulates fronrthe machine. Upright standards 77 are secured to the rod-76, one

opposite to eachirack' GGe Eachstandardw has extending from its upper end in parallel relation to the rolls aip-in or"stub-shaft -78" on which is journaled an arm 79 intermediate its endsi' meant me-On one-sideof its pivotal point extends .asarweighted pawl lapirimseout and there isrno lapeto keep the.

member .81; do.wn,- the weighted. pawl, which over-balances the other. side. of the arm 79, with be permittedetofall into engagement with the rack, whereby .ai circuitc-is closed andthe machine caused-torstop Ag power shiftinggmechanism as .contem platedeby the present;- invention .to have its operation initiated by a circuit-elosen suchi ingse.

hereinbefore mentioned is exemplified by" I i gs'. ,4,; 5,;6,t 7; &,;9, 10, land 1*]; of the draw- A support 84: of the shifting mechanismnis-e shown-securedto the f-name: of themachine oat whichjthevmechanismissa- .part'. c The sup pont has .jourIiaied-gthereon. awcamecarrying shaft 85 which iserotated:constantly whiletheizmachine is in, operationby :Wormgga-rs. 8 6. Theshaft} has; vlooseiithereon.a-iid; normally rotating therewith. 1a ratchet-wheeh 87 h ch-ion; one; SldGvSttfS against I an abutment 8% on the, .shaft iand; ,:on the other. =side:,has. a; spiralacamsfaee;, 89:. ThisacamV-fface '11s:

. coipei'iable :Witlt correspondinglyeshaped.

ame ace 9050f. asleeae 91 keyed anililongit-u.

dinallya. movablezonlltlie ishatt:1 The; camfaces/of 'j the ratchet-wheel; and; sleeve nor? Y malty are held, closedtc'entact, by a spring: 9124:0115 the shagfii between the free end of the sleeazeand an abutmentflii onzthe shaftil: A lever 94 iiulcmimed'. at, 935 on. the support has; a bifurcated end 96y=WhilGhH straddles the shaft S5;and.;, ahuts the endtofthe: sleeve opposite to: the camsifaee-i thereof, 5 .otlien'.

end l'everiisconneetedf by; a ream a hand shizfiti'nfg lever: gee-1, and ,with:

with be ,99 dr lQrbBl lJ -L'Qf fromelone to the;

other-Q of one; weiiedse iaieyeioaane JiOl,

shafts-1&2 s themes-em,

ointment J drinecams are closed, the drive belt will be on thefast'pulley and the machine will be in Opera tion'. W'henthe sleeveylis moved longitudinally of the shaft by means now to be described, the sleeve-in contact with the bifurcated end of the lever will swing the lever and shift the belt to the loose pulley and stop the machine.

An insulated box or casing 103is secured to the support 84 above theshaft 85, and a pawl 10sti's hungv pivot'ally at its upper end in this-box. in such manner that its lower, end

normally will be out oflengagement with the ratchet-wheel 87. One or more electromagnets 105--withinthe vbox have their cores positioned opposite to the upper portion of. the pawl and: so arranged that, when-the magnets are energizedby closing of acircuit on movement of one or more-circuit:

closers, such,- for example, as that shown by Figs, 1, 2,:and 3', they will draw the lower end .of the, pawl into. engagement withthe ratchet-wheel: and stop rotation of that. wheel. sleeve-91 continuing to rotatewill be-moved. longitudinally of the shaft by coaction of the cam faces and the belt-shifting,lever will be swung to transfer the-belt-from' the fast Itothe loosewpulley and the. machine stopped. v s

A curved spring 106 :issecurediat. one: end tola s-ide of the magnet-box 10.3 and at. its other end it:is:in@contact with the side ofLthe- When the wheel is stopped, the s lever 9% ;whileithati lever isinthef position:

it has un der the normal" conditions of the machine in operation-. When the. lever has moved .and-shif-tedlthe belt from thefast tof the loose pulley,;it is released from; contact with theispring', and a circuit through-the machine isv opened,-as hereinafter:described, thisrelease being vat a time, that the sleeve; has reached about one-quarter of its longitudinal movement in order to openithe; circuit; through the machine, as soon asthe pawl has engaged the vratchet-ewheel or shortly there after. -When1the,sleeve has reached the limit v of: itsrmovement, it is forced back home by the spring,,92.

c A guide .107 fromthe-sideof the. magnet-box oppositev to the lever- 94, and through this guide extends an-endportion of a fiat spring 1:08, which at? the other end; isypi-votedf and rigidly secured tojithe side of. theilever on: the same side of.

its fulcrum as the bifurcated end. ,The-

spring I extends behind the pawl 104 or on the same sldeithereof as the magnets," and: it has, a. shoulder .or curved. portion 1 0,9 de-a flected. toward] the pawl: and normallythavsl ing. position between the pawl :and :guide: 10 7, as,.shownbyflFigsv8 and 9. Normalliy' is sec ured to and'de-pend's:

the pawl-isout-of contact with the springer as-shown by: Fig. jVVhen the; pawl fis dl fiew lainto' engagement with the: ratchet 1 wheol ita o f srclose toe the spring as: shown;

by Fig. 91 Then, on movement ofthe lever, the spring is drawn thereby so that its shoulder rides over the pawl, as shown by Fig. 10, and thespring is arranged so that it has a tendency in this position to push the pawl out of engagement with the ratchetwheel. However, the power of the spring is not sufficient to disengage the pawl from the ratchet-wheel against the combined opposition of the drawing power of the magnets while the circuit is closed and the push of the ratchet-wheel against the pawl while the sleeve is being forced longitudinally by the coacting cam-faces; but, as soon as the circuit is opened by movement of the lever from contact with the spring 106 and the push of the ratchet-wheel ceases on return home of the sleeve, the tension or power. of the spring then is suflicie'nt to, and does, move the pawl from engagement with the ratchet-wheel. p

Referring now to "Fig. 3, which shows diagrammatically the electric circuit, 110

designates any suitable sourceof electricity,

from one pole of which leads a conductor 111 connected to the winding of the magnets 105, and from the magnet-winding there leads a conductor 112 to a rod 25, in electrical connection with which rod are slivercontrolled circuit-closers such as are disclosed more particularly in the hereinbefore mentioned divisional applications. From the other pole of the electric source leads a conductor 114 through the insulated magnet-box 103 to the spring contact member 106 normally in contact with the lever 94, whereby the machine itself is made a part of the circuit. A conductor 113 leads from the rod 25 to the insulated rod 7 6 of the lap controlled circuit-closer. When any of the circuit-closers operates, the circuit is closed through the machine and the insulated rods 25 and 76 and held closed until the contactspring 106 is released from the lever 94:, during which time the magnets are energized and the belt is caused to shift and the machine stopped as already explained. For example, when the lap runs out and there is no lap to keep the member 81 down, the weighted pawl 80 will fall into engagement wrtth the rack 66 and thereby close the circu1-.

On release of the spring 106 from the lever, the circuit is opened, and there is no danger of an operator receiving an electric shock during the time he is restoring the materlal to the normal condition of movement fi'om the condition that caused the circuit to c ose.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A stop mechanism comprising a member normally having continuous movement, a stop member movable into engagement with and thereby stopping said member, a power-shifting device arranged to belmoved by coaction with said memberwhen stopped, a stop releaser, and means causing said stopreleaser to push in releasing direction against said stop member after institution of action of said power-shifting device.

2. A stop mechanism comprising a member norm'ally'having continuous movement, a pawl movable into stopping engagement with and normally disengaged from said member, a power-shifting device arranged to be moved by coaction with said member when stopped, and a spring connected with said device and arranged to be tensioned in releasing direction against said pawl by movement of said device.

3. A stop mechanism comprising a-mem ber normally having continuous movement, a pawl movable into stopping engagement with and normally disengaged from said member, a power-shifting device arranged to be moved by coaction with said member when stopped, and a spring connected with said device and having a shoulder positioned to exert releasing pressure against said pawl on movement of said device.

4. A stop mechanism comprising a member normally having continuous movement, a pawl movable into stopping engagement with and normally disengaged from said member, a power-shifting device arranged to be moved by coaction with said member when stopped, a spring connected with said device and arranged to be tensioned in releasing direction against said pawl by movement of said device, an electric circuit, an electro-magnet controlled by said circuit and arranged to move said pawl to stopping position, and a circuit-closer for said circuit.

5. A stop mechanism comprising a member normally having continuous movement, a pawl movable into stopping engagement with and normally disengaged from said member, a power-shifting device arranged to be moved by coaction with said member when stopped, a pawl-releaser connected with said device and having a shoulder positioned to exert releasing pressure against said pawl on movement of said device, an electric circuit, an electro-magnetcontrolled by said circuit and arranged to move said pawl to stopping position, and a circuitcloser for said circuit.

6. A stop mechanism comprising a member normally having continuous movement, a stop member movable into engagement with and thereby stopping said member, a power-shifting device arranged to be moved by coaction with said member when stopped, a stop-releaser, means causing said stop-releaser to push in releasing direction against said stop after institution of action of said power-shifting device, a normally-closed cirsuit-breaker and means whereby it is opened 

